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Thread: 98-99 pcm swap ? 69 brown evap purge

  1. #1
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    Question 98-99 pcm swap ? 69 brown evap purge

    Does anyone know what im supposed to do with the pin 69 of the c1 connector of the 1998 corvette, its the evap perge vaccume switch signal wire. thats the only one im lacking so please help thanks Adam

  2. #2
    Lifetime Member ChipsByAl's Avatar
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    Feb 2006
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    Discard it. The later models do not use this Evap input. The fuel tank pressure sensor is the only telltale for the PCM's Evap diagnostics.
    Al
    "Trash that carb and get Injected!"

  3. #3
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    Quote Originally Posted by ChipsByAl
    Discard it. The later models do not use this Evap input. The fuel tank pressure sensor is the only telltale for the PCM's Evap diagnostics.
    Al
    Yep, and yoru gonna have to turn off the mil for the fuel tank pressure sensors once you get it going
    WWW.EFIAlchemy.com

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